AAT3120 Datasheet, PDF (4/14 Pages) Advanced Analogic Technologies – 3-Channel Charge Pump For White LED Applications

AAT3120
3-Channel Charge Pump
For White LED Applications
Electrical Characteristics¹
C_IN = C_OUT = C₁ = C₂ = 1.0µF; T_A = -40°C to +85°C, unless otherwise noted. Typical values are T_A = 25°C,
V_IN = 3.5V.
Symbol Description
Input Power Supply
V_IN
Operation Range
I_CC
Operating Current
I_SHDN
I_DX
I_(D-Match)
Shutdown Current
Output Current
Current Matching Between
Any Two Outputs
Charge Pump Section
T_SS
F_CLK
EN/SET
Soft-Start Time
Clock Frequency
V_EN(L)
V_EN(H)
T_{EN/SET LO}
T_{EN/SET HI}
T_OFF
Input Current
Enable Threshold Low
Enable Threshold High
EN/SET Low Time
Minimum EN/SET High Time
EN/SET Off Timeout
EN/SET Input Leakage
Conditions
3.0V ≤ V_IN ≤ 5.5V, Active,
No Load Current
EN = 0
3.0 ≤ V_IN ≤ 5.5
VD1:D3 = 3.6, V_IN = 3.5V
2.7V ≤ V_IN ≤ 5.5V
2.7V ≤ V_IN ≤ 5.5V
Min Typ Max Units
2.7
5.5 V
1.8 3.0 mA
1.0 µA
18 20 22 mA
0.5
%
200
µs
1000
kHz
0.4 V
1.4
V
0.3
75 µs
50
ns
500 µs
-1
1 µA
1. The AAT3120 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured
by design, characterization, and correlation with statistical process controls.
4
3120.2005.11.1.1